A192070 (A192251)/2.

0, 1, 4, 24, 129, 759, 4455, 26763, 161898, 988438, 6069228, 37460952, 232160184, 1443830084, 9005809184, 56316652784, 352949825249, 2216334391919, 13941409199519, 87830683173419, 554096566907069, 3499981913717189, 22132830286939649

Offset: 1

Author

Clark Kimberling, Jun 27 2011

Keywords

• nonn

Comments

See A192232, A192251.

Crossrefs

Cf. A192232, A192251.

Programs

Mathematica

(See A192250.)